Handset controller for diesel smoke opacimeter



FIG. 1 is an isometric view showing the front, bottom and right-side ofmy invention;

FIG. 2 is a front elevation view of my invention;

FIG. 3 is a back elevation view of my invention;

FIG. 4 is a top elevation view of my invention;

FIG. 5 is a bottom elevation view of my invention; and,

FIG. 6 is a left-side elevation view of my invention.

CLAIM The ornamental design for a handset controller for diesel smoke opacimeter, as shown and described. 